public override void reactToCollision(PhysObj otherObj)
{
PhysCircle otherCircle = (PhysCircle)otherObj;
Vector2 difference = getCenter() - otherCircle.getCenter();
float d = difference.Length();
Vector2 mtd = difference * ((radius + otherCircle.radius) - d) / d;
float im1 = 1 / Mass;
float im2 = 1 / otherObj.Mass;
Position += mtd * (im1 / (im1 + im2));
otherObj.Position -= mtd * (im2 / (im1 + im2));
Vector2 v = Velocity - otherObj.Velocity;
Vector2 mtdN = mtd;
mtdN.Normalize();
float vn = Vector2.Dot(v, mtdN);
if (vn > 0.0f)
{
return;
}
float i = (-(1.0f + bounce) * vn) / (im1 + im2);
Vector2 impulse = mtdN * i;
Velocity += impulse * im1;
otherObj.Velocity -= impulse * im2;
}
public override bool checkCollision(PhysObj otherObj)
{
PhysCircle otherCircle = (PhysCircle)otherObj;
// for other shapes, there will need to be a method that returns the point closest to this circle
// depending on shape type, rotation, etc. with that, this function should still work
float distance = (otherCircle.getCenter() - getCenter()).Length();
if (distance < radius + otherCircle.radius)
{
return(true);
}
return(false);
}